session_start(): open failed: No space left on device (28)

I occasionally receive this error on my sites. I’ve checked the /tmp/ folder and it’s not even close to full.

hero@vps [~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        30G   16G   13G  57% /
none            504M     0  504M   0% /dev/shm
/usr/tmpDSK     2.0G  587M  1.3G  31% /tmp

At the same time, some other site has the following error: Fatal error: Call to a member function get() on a non-object in /home/memeflor/public_html/index.php on line 105

Sometimes they will just back to normal by itself. But the error will happen again some other times. Does anyone have any advise on this? Thanks.

Hero Wijayadi

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Hi asb, Yes I’m using WHM/CPanel.

If so, check to see if you have user quotas enabled.

Sorry I’m not to clear about this part. I do have packages (which include the disk quota and bandwidth limit) set for each user. And so what does this relate to my problem? Could you please elaborate on this?